SCAR band patterns of B. nivea var. tenacissima and B. nivea var. nivea. SCAR profiles of Boehmeria DNA fragments generated with primers SR-S343-F1, SR-S343-R1, SR-S343-R2 and SR-S343-R3. Representative samples of both species are shown on the top of lanes. The numbers on the left indicate the size of DNA standards. M: DNA markers; NC: negative control.